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Show 1889.] ON THE ANATOMY OF GONATUS FABRICII. 117 EXPLANATION OF THE PLATES. PLATE XI. Fig. 1, 1 a. Diplommatina lutea, p. 112. 2, 2 a. platycheilus, p. 112. 3, 3 a. rubella, p. 113. 4, 4 a. aurea, p. 113. 5, 5 a. crassilabris, p. 113. 6. albata, p. 113. 10,10 a, 106, 10 c. Hungerfordia pelewensis, p. 115. PLATE XII. Fig. 7, 7 a, 7 b. Diplommatina gibboni, p. 114. 8, 8 a. patula, p. 114. 9, 9 a. strigata, var. kororensis, p. 115. 11,11 a, lib, lie. Helix (Endodonta) kororensis, p. 11G. 12,12 a, 12 6, 12 c. ( ) fusco-zonata, p. 116. 4. Observations on the Anatomy of a rare Cephalopod (Gonatus fabricii). By WILLIAM E. HOYLE, M.A. (Oxon.), F.R.S.E. (Communicated by Professor G. B. HOWES, F.L.S., E.Z.S.) [Eeceived February 27, 1889.] (Plates XIII. & XIV.) CONTENTS. I. Introduction, p. 117. II. General Disposition of the Organs, p. 119. III. The Cartilages, p. 119. IV. The Pen, p. 121. V. The Muscles, p. 124. VI. The Nervous System and Sense-Organs, p. 124. VII. Digestive Organs, p. 125. VIII. Circulatory Organs, p. 126. IX. Eespiratory Organs, p. 127. X. Excretory and Generative Organs, p. 127. XI. The Funnel-Organ, p. 128. XII. General Conclusions, p. 131. XIII. Explanation of the Plates, p. 134. I. Introduction. The specimens upon which the following investigation is based were as follows :- 1. Three immature examples obtained during the 'Valorous' Expedition, varying in length from 30 to 50 millim. 2. A number of fragments, representing about a dozen individuals, taken by my friend Mr. Robert Gray, of Peterhead, from the stomachs of a Bottle-nosed Whale (Hyperoodon rostratus) and a Narwhal. These were for the most part only arms, from which all the hooks and suckers had been removed, with the buccal mass included PROC. ZOOL. S O C - 1889, No. IX. 9 |